Woodman Point Groyne is a straightforward boulder-wall dive on the tip of Woodman Point, a few hundred metres from Ammo Jetty. The groyne extends the natural limestone point with large rocks that step down onto sand and seagrass, reaching about 9 m at the end. It is a useful fallback when other sites are blown out, because the two sides give shelter from different wind directions.

The rocks are the habitat. Look into the gaps for toadfish, porcupinefish, jumping blennies, grubfish and red-lipped morwong, with schools of drummer working the shallows. Colonies of bronze and orange zoanthids grow on the boulders, and patient divers find nudibranchs, including the occasional less common species, as well as octopus and small crabs. The seagrass meadows off the wall hold whiting, cobbler, stingrays and cuttlefish, and there are sometimes seahorses on the weed near the rocks.

The honest local view is that the groyne is an average dive: life is less varied than on Ammo Jetty's pylons and the deeper sand is silty. It is better suited to relaxed novice dives, skills practice, snorkelling along the wall or a calm night dive than to experienced divers looking for scenery. Combined with a first dive at Ammo Jetty it makes a reasonable morning at Woodman Point.

The point is shared with kite-surfers, anglers and walkers. Fishing line and tackle collect in the rocks and along the seagrass edge, so carry a cutting tool and check your gear as you go. On the plus side, the car park is close to the water, depths stay moderate and there is plenty of margin for a relaxed dive with a new buddy.

From Cockburn Road turn west into O'Kane Court and follow Woodman Point View to its end near the point. Kit up in the car park; the site is isolated on weekdays, so lock vehicles and keep valuables out of sight. The easiest entry is the small beach on the south-east side of the groyne; experienced divers also scramble in over the rocks.

The north side is short; the south side runs further but stays shallow. About 20 minutes from Fremantle or Rockingham and 30 minutes from the Perth CBD.

The groyne gives options: the north side is sheltered from southerlies and the south side from northerlies, so pick the lee side for the day's wind. Westerly winds send swell onto both sides and make the rocks dangerous. A gentle easterly is ideal.

The summer sea breeze from the south-west arrives around midday and is also popular with kite-surfers here, so morning dives are best. Night dives are often calm underwater even when the surface is choppy. Silt in the deeper water means visibility falls quickly after any blow.

Enter from the small beach on the south-east side, descend in 2–3 m and follow the base of the rock wall out towards the end of the groyne, where the depth reaches about 9 m. Explore the boulders and the seagrass edge, then turn and return along the wall, or on the calm side continue round the tip before heading back. Keep the wall on one shoulder for navigation.

No regular operator trips; dived independently and occasionally by clubs as a sheltered alternative to Ammo Jetty nearby.